from django.test import TestCase
from django.core.urlresolvers import resolve
from django.http import HttpRequest
from django.template.loader import render_to_string

from lists.views import home_page
from lists.models import Item, List

# Create your tests here.
class HomePageTest(TestCase):

	def test_root_url_resolves_to_home_page_view(self):
		found = resolve("/")
		self.assertEqual(found.func, home_page)


class ListViewTest(TestCase):

	def test_uses_list_template(self):
		list_ = List.objects.create()
		response = self.client.get('/lists/%d/' % (list_.id,))
		self.assertTemplateUsed(response, "lists/list.html")

	def test_displays_only_items_for_that_lists(self):
		correct_list = List.objects.create()
		Item.objects.create(text='itemey 1', list=correct_list)
		Item.objects.create(text='itemey 2', list=correct_list)
		other_list = List.objects.create()
		Item.objects.create(text='other list item 1', list=other_list)
		Item.objects.create(text='other list item 2', list=other_list)

		response = self.client.get('/lists/%d/' % (correct_list.id,))
		
		self.assertContains(response, 'itemey 1')
		self.assertContains(response, 'itemey 2')
		self.assertNotContains(response, 'other list item 1')
		self.assertNotContains(response, 'other list item 2')


class NewListTest(TestCase):

	def test_saving_a_POST_request(self):
		self.client.post('/lists/new', data={"item_text":"A new list item"})
		self.assertEqual(Item.objects.count(), 1)
		new_item = Item.objects.first()
		self.assertEqual(new_item.text, "A new list item")


	def test_redirects_after_POST(self):
		response = self.client.post('/lists/new', data={"item_text":"A new list item"})
		new_list = List.objects.first()
		self.assertRedirects(response, '/lists/%d/' % (new_list.id,))


class NewItemTest(TestCase):
	def test_can_save_a_POST_request_to_an_existing_list(self):
		other_list = List.objects.create()
		correct_list = List.objects.create()

		self.client.post('/lists/%d/add_item' % (correct_list.id,), data={'item_text': 'A new item for an existing list'})

		self.assertEqual(Item.objects.count(),1)
		new_item = Item.objects.first()
		self.assertEqual(new_item.text, 'A new item for an existing list')
		self.assertEqual(new_item.list, correct_list)

	def test_redirects_to_list_view(self):
		other_list = List.objects.create()
		correct_list = List.objects.create()

		response = 	self.client.post('/lists/%d/add_item' % (correct_list.id,), data={'item_text': 'A new item for an existing list'})
		self.assertRedirects(response, '/lists/%d/' % (correct_list.id,))


class ListAndItemModelsTest(TestCase):
	def test_saving_and_retrieving_items(self):
		list_ = List()
		list_.save()
		first_item = Item()
		first_item.text = "The first (ever) list item"
		first_item.list = list_
		first_item.save()

		second_item = Item()
		second_item.text = "The second list item"
		second_item.list = list_
		second_item.save()

		saved_list = List.objects.first()
		self.assertEqual(saved_list, list_)
		saved_items = Item.objects.all()
		self.assertEqual(saved_items.count(), 2)
		first_saved_item = saved_items[0]
		second_saved_item = saved_items[1]
		self.assertEqual(first_saved_item.text, "The first (ever) list item")
		self.assertEqual(first_saved_item.list, list_)
		self.assertEqual(second_saved_item.text, "The second list item")
		self.assertEqual(second_saved_item.list, list_)